People using iolite v4.3.4 or earlier on Windows may have issues running the new PlasmAge.py export script available here. There will be an error message in the Messages View.
If this error message refers to a missing library "Openpyxl", this can be easily fixed by downloading this zip file. This is the same as the download file from PyPI, but instead of a tar.gz file, I've saved it as a .zip file to make it easier to extract on Windows.
Once you've downloaded that file, extract the contents somewhere obvious (in case you need to find the folder again). Then, in iolite, add this folder to your python site packages. To do this, go to Preferences -> Paths. In the Python Site Packages entry (at the bottom), click the + button to add a folder to the list. Navigate to the unzipped folder and select the openpyxl-3.0.3 folder (not the enclosing folder). Then click Select Folder, and restart iolite. You should now have everything you need to get the PlasmAge.py script working.
Note that this issue will be fixed in the next version of iolite, so you won't need to do the above. We'll also remove the zip file above at this time.